Kent
Kent has been the stepping-stone to Britain for centuries - from Roman forts, with lighthouses and defenses, to medieval castles and later fortifications against Napoleon. Canterbury became a pilgrimage center, with a glorious medieval cathedral and resting place of famous knights and Thomas a Becket. For towns along the coast, shipwrecks were gifts from the sea, and smuggling a cottage industry.
Dover Castle and Secret Wartime Tunnels (Dover) - Perched atop the White Cliffs, Dover Castle is an imposing 12th century castle. In addition to the Norman castle, visit the Secret Wartime Tunnels. The tunnels were originally constructed in the Napoleonic Wars and used again in World War II. For an historical overview of Dover, visit the White Cliffs Experience, an attraction that dramatizes scenes from the Roman era and World War II. Wander down by the harbor to watch the ferries coming in.
Leeds Castle - Leeds Castle, billed as "the loveliest castle in the world," is certainly a beauty. The castle started out as a Norman fortress, but became a royal residence, especially for Henry VIII. In the 500 acres around the castle, you'll want to explore the yew maze, the aviary, a secret underground grotto and gardens. Kids will be thrilled with the display of falconry - watch birds of prey swooping our your head, daily in the afternoons. For little ones, there's a smaller turf maze and playground. Bring a picnic lunch, there's plenty of places to picnic on the ground, or stop in the tea room for a snack.